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题名: Asymmetric interaction of point defects and heterophase interfaces in ZrN/TaN multilayered nanofilms
作者: Lao, Yuanxia;  Hu, Shuanglin;  Shi, Yunlong;  Deng, Yu;  Wang, Fei;  Du, Hao;  Zhang, Haibing;  Wang, Yuan
发表日期: 2017-1-5
摘要: Materials with a high density of heterophase interfaces, which are capable of absorbing and annihilating radiation-induced point defects, can exhibit a superior radiation tolerance. In this paper, we investigated the interaction behaviors of point defects and heterophase interfaces by implanting helium atoms into the ZrN/TaN multilayered nanofilms. It was found that the point defect-interface interaction on the two sides of the ZrN/TaN interface was asymmetric, likely due to the difference in the vacancy formation energies of ZrN and TaN. The helium bubbles could migrate from the ZrN layers into the TaN layers through the heterophase interfaces, resulting in a better crystallinity of the ZrN layers and a complete amorphization of the TaN layers. The findings provided some clues to the fundamental behaviors of point defects near the heterophase interfaces, which make us re-examine the design rules of advanced radiation-tolerant materials.
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Recommended Citation:
Lao, Yuanxia,Hu, Shuanglin,Shi, Yunlong,et al. Asymmetric Interaction Of Point Defects And Heterophase Interfaces In Zrn/tan Multilayered Nanofilms[J]. Scientific Reports,2017,7:-.

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